puppet stuff to enable linux cpu isolation

isolation.pp

# This class defines a grub2-mkconfig exec block so that other
# classes can refresh it.

class hardware::grub {
  exec { 'grub2-mkconfig':
    command     => '/sbin/grub2-mkconfig -o /boot/grub2/grub.cfg',
    refreshonly => true,
    user        => 'root',
  }
}
# This class adds options to /etc/default/grub to enable
# cpu isolation for bro

class hardware::isolcpus($cpulist="") {
  include hardware::grub
  if($cpulist != "") {
      shellvar { 'GRUB_CMDLINE_LINUX_CPU_ISOLATION':
          variable     => 'GRUB_CMDLINE_LINUX',
          ensure       => present,
          target       => '/etc/default/grub',
          value        => "isolcpus=${cpulist}",
          array_append => true,
          quoted       => 'double',
          notify       => Exec['grub2-mkconfig'],
      }
      shellvar { 'GRUB_CMDLINE_LINUX_CPU_NOHZ':
          variable     => 'GRUB_CMDLINE_LINUX',
          ensure       => present,
          target       => '/etc/default/grub',
          value        => "nohz_full=${cpulist}",
          array_append => true,
          quoted       => 'double',
          notify       => Exec['grub2-mkconfig'],
      }
  }
}